Always do symbol unsubscribe on teardown

kivy_mainline_and_py3.8
Tyler Goodlet 2018-07-05 15:31:52 -04:00
parent 73eedfd7b3
commit f4a91a4975
1 changed files with 62 additions and 59 deletions
piker/ui

View File

@ -391,74 +391,77 @@ async def _async_main(name, portal, tickers, brokermod, rate):
"piker.brokers.core", 'start_quote_stream',
broker=brokermod.name, tickers=tickers)
async with trio.open_nursery() as nursery:
# get first quotes response
log.debug("Waiting on first quote...")
quotes = await agen.__anext__()
first_quotes = [
brokermod.format_quote(quote, symbol_data=sd)[0]
for quote in quotes.values()]
try:
async with trio.open_nursery() as nursery:
# get first quotes response
log.debug("Waiting on first quote...")
quotes = await agen.__anext__()
first_quotes = [
brokermod.format_quote(quote, symbol_data=sd)[0]
for quote in quotes.values()]
if first_quotes[0].get('last') is None:
log.error("Broker API is down temporarily")
nursery.cancel_scope.cancel()
return
if first_quotes[0].get('last') is None:
log.error("Broker API is down temporarily")
nursery.cancel_scope.cancel()
return
# build out UI
Window.set_title(f"watchlist: {name}\t(press ? for help)")
Builder.load_string(_kv)
box = BoxLayout(orientation='vertical', padding=5, spacing=5)
# build out UI
Window.set_title(f"watchlist: {name}\t(press ? for help)")
Builder.load_string(_kv)
box = BoxLayout(orientation='vertical', padding=5, spacing=5)
# define bid-ask "stacked" cells
# (TODO: needs some rethinking and renaming for sure)
bidasks = brokermod._bidasks
# define bid-ask "stacked" cells
# (TODO: needs some rethinking and renaming for sure)
bidasks = brokermod._bidasks
# add header row
headers = first_quotes[0].keys()
header = Row(
{key: key for key in headers},
headers=headers,
bidasks=bidasks,
is_header_row=True,
size_hint=(1, None),
)
box.add_widget(header)
# add header row
headers = first_quotes[0].keys()
header = Row(
{key: key for key in headers},
headers=headers,
bidasks=bidasks,
is_header_row=True,
size_hint=(1, None),
)
box.add_widget(header)
# build grid
grid = TickerTable(
cols=1,
size_hint=(1, None),
)
for ticker_record in first_quotes:
grid.append_row(ticker_record, bidasks=bidasks)
# associate the col headers row with the ticker table even though
# they're technically wrapped separately in containing BoxLayout
header.table = grid
# build grid
grid = TickerTable(
cols=1,
size_hint=(1, None),
)
for ticker_record in first_quotes:
grid.append_row(ticker_record, bidasks=bidasks)
# associate the col headers row with the ticker table even though
# they're technically wrapped separately in containing BoxLayout
header.table = grid
# mark the initial sorted column header as bold and underlined
sort_cell = header.get_cell(grid.sort_key)
sort_cell.bold = sort_cell.underline = True
grid.last_clicked_col_cell = sort_cell
# mark the initial sorted column header as bold and underlined
sort_cell = header.get_cell(grid.sort_key)
sort_cell.bold = sort_cell.underline = True
grid.last_clicked_col_cell = sort_cell
# set up a pager view for large ticker lists
grid.bind(minimum_height=grid.setter('height'))
pager = PagerView(box, grid, nursery)
box.add_widget(pager)
# set up a pager view for large ticker lists
grid.bind(minimum_height=grid.setter('height'))
pager = PagerView(box, grid, nursery)
box.add_widget(pager)
widgets = {
# 'anchor': anchor,
'root': box,
'grid': grid,
'box': box,
'header': header,
'pager': pager,
}
nursery.start_soon(
update_quotes, nursery, brokermod, widgets, agen, sd, quotes)
widgets = {
# 'anchor': anchor,
'root': box,
'grid': grid,
'box': box,
'header': header,
'pager': pager,
}
nursery.start_soon(
update_quotes, nursery, brokermod, widgets, agen, sd, quotes)
# Trio-kivy entry point.
await async_runTouchApp(widgets['root']) # run kivy
await agen.aclose() # cancel aysnc gen call
# Trio-kivy entry point.
await async_runTouchApp(widgets['root']) # run kivy
await agen.aclose() # cancel aysnc gen call
finally:
# un-subscribe from symbols stream
await portal.run(
"piker.brokers.core", 'modify_quote_stream',
broker=brokermod.name, tickers=[])